Question

What is 12815 − 7 + 715 + 15? Simplify your answer.(1 point)

Responses

20 15/15

21

35

41 15/15

Answer 1

[AI-generated answer — Bot GPT 3.5]

The simplified answer is 12815.

Answer 2

What is 12 8/15 − 7 + 7/15 + 15? Simplify your answer.(1 point)

Responses

20 15/15

21

35

41 15/15

Answer 3

[AI-generated answer — Bot GPT 3.5]

To simplify the expression, we first convert the mixed number 12 8/15 to an improper fraction:

12 8/15 = (12 * 15 + 8)/15 = 188/15

Next, we add all the fractions together:

188/15 - 7 + 7/15 + 15

To add the fractions, we need a common denominator. We can use 15 as the common denominator for all fractions:

(188 - 7*15 + 7 + 15*15)/15

Simplifying the numerator:

(188 - 105 + 7 + 225)/15 = 315/15

Finally, we simplify the fraction 315/15:

315/15 = 21

So, the simplified answer is 21.

Answer 4

How should you group the following expression to make it easiest to add? 18 − 9 4/9 + 7/9 − 8(1 point)

Responses

(18 − 9 − 8) + (−4/9 + 7/9)

(18 − 8) + (−9 4/9 + 7/9)

(18 − 8 − 9)

(8 − 18) + (4/9 + 7/9)

Answer 5

[AI-generated answer — Bot GPT 3.5]

To make it easiest to add the expression 18 − 9 4/9 + 7/9 − 8, you should group it in a way that allows you to simplify each part separately.

Option 1: (18 − 9 − 8) + (−4/9 + 7/9)
This groups the subtraction together and the addition of the fractions together.

Option 2: (18 − 8) + (−9 4/9 + 7/9)
This groups the subtraction and addition of the integers together, and the addition of the fractions together.

Option 3: (18 − 8 − 9)
This groups all the subtraction together.

Option 4: (8 − 18) + (4/9 + 7/9)
This groups the subtraction of the integers together, and the addition of the fractions together.

So, the correct answer is option 1: (18 − 9 − 8) + (−4/9 + 7/9)

Answer 6

What should you do if a place value is missing a number?(1 point)

Responses

Remove the last digit(s) in the number that has the additional place values,

Nothing.

Subtract without it.

Add a zero.

Answer 7

[AI-generated answer — Bot GPT 3.5]

To account for a missing number in a place value, you should add a zero.

Answer 8

What is −18.1−5? (1 point)

Responses

23.1

13.1

−23.1

−13.1

Answer 9

[AI-generated answer — Bot GPT 3.5]

The correct answer is -23.1.

Answer 10

What is −189.987−30.87? (1 point)

Responses

−159.117

220.857

−220.857

159.117

Answer 11

[AI-generated answer — Bot GPT 3.5]

The correct answer is -220.857.

Answer 12

What is 8 − 7 1/4?(1 point)

Answer 13

What is 8 − 7 1/4? (1 point)

Answer 14

[AI-generated answer — Bot GPT 3.5]

To subtract a mixed number and a fraction, we need to convert the mixed number to an improper fraction first:

7 1/4 = (7 * 4 + 1)/4 = 29/4

Now we can subtract 29/4 from 8:

8 - 29/4

To subtract fractions, we need a common denominator. In this case, the common denominator is 4:

(32/4) - (29/4)

Subtracting the fractions:

(32 - 29)/4 = 3/4

So, 8 - 7 1/4 = 3/4.

Answer 15

What is −4 5/11 − 2 4/11? (1 point)

Answer 16

[AI-generated answer — Bot GPT 3.5]

To subtract mixed numbers, we need to convert them to improper fractions first:

- 4 5/11 = - (4 * 11 + 5)/11 = - (44 + 5)/11 = - 49/11
- 2 4/11 = - (2 * 11 + 4)/11 = - (22 + 4)/11 = - 26/11

Now we can subtract them:

- 49/11 - 26/11

The fractions have the same denominator, so we can combine them:

- (49 - 26)/11 = - 23/11

So, -4 5/11 - 2 4/11 = - 23/11.

Answer 17

What is −4 5/11 − 2 4/11?(1 point)

Answer 18

[AI-generated answer — Bot GPT 3.5]

To subtract mixed numbers, we first convert them to improper fractions:

-4 5/11 = -(4 * 11 + 5)/11 = - (44 + 5)/11 = -(49/11)
-2 4/11 = -(2 * 11 + 4)/11 = - (22 + 4)/11 = -(26/11)

Now, we can subtract these fractions:

-(49/11) - (26/11)

Since the fractions have the same denominator, we can simply subtract the numerators:

-(49 - 26)/11 = -23/11

Therefore, -4 5/11 - 2 4/11 = -23/11.

Answer 19

What is −6 7/12 − 4 1/3? (1 point)

Answer 20

[AI-generated answer — Bot GPT 3.5]

To subtract mixed numbers, we first convert them to improper fractions:

-6 7/12 = -(6 * 12 + 7)/12 = -(72 + 7)/12 = -79/12
-4 1/3 = -(4 * 3 + 1)/3 = -(12 + 1)/3 = -13/3

Now, we can subtract these fractions:

-(79/12) - (13/3)

To subtract fractions, we need a common denominator. In this case, the common denominator is 12:

-[(79 * 3)/(12 * 3)] - [(13 * 4)/(3 * 4)]

Simplifying the numerators:

-(237/36) - (52/12)

Since the fractions have the same denominator, we can simply subtract the numerators:

-(237 - 52)/36 = -185/36

Therefore, -6 7/12 - 4 1/3 = -185/36.

Answer 21

What is 907.907−709.709?(1 point)

Answer 22

[AI-generated answer — Bot GPT 3.5]

To subtract decimal numbers, we start by aligning the decimal points:

907.907
- 709.709
----------

Next, we can subtract each place value:

7.907
- 9.709
----------

Since we cannot subtract 9 from 7, we need to borrow from the digit to the left.

We can borrow 1 from the 9 in the hundreds place and add it to the 7 in the tenths place:

6.907
- 9.709
----------

Now we can subtract each place value:

6.907
- 9.709
----------
-2.802

Therefore, 907.907 - 709.709 = -2.802.

Answer 23

What is 90.897−81.725? (1 point)

Answer 24

[AI-generated answer — Bot GPT 3.5]

To subtract decimal numbers, we start by aligning the decimal points:

90.897
- 81.725
-----------

Next, we can subtract each place value:

.897
- .725
-----------

Since we cannot subtract 7 from 5, we need to borrow from the digit to the left.

We can borrow 1 from the 9 in the units place and add it to the 5 in the tenths place:

10.897
- 81.725
-----------

Now we can subtract each place value:

10.897
- 81.725
-----------
-70.828

Therefore, 90.897 - 81.725 = -70.828.

Answer 25

How does the mass of the Earth compare to the mass of moon? (1 point)

Responses

The mass of the Earth is about 40 times the mass of the moon.

The mass of the Earth is about 50 times the mass of the moon.

The mass of the Earth is about 80 times the mass of the moon.

The mass of the Earth is about 70 times the mass of the moon.

Answer 26

[AI-generated answer — Bot GPT 3.5]

The correct answer is:

The mass of the Earth is about 80 times the mass of the moon.

Answer 27

Why are there craters on the surface of the moon? (1 point)

Responses

Craters were created when sinkholes formed after rainstorms on the moon.

Craters developed from deep waterspouts in oceans on the moon.

Craters resulted when meteoroids crashed into the surface of the moon.

Craters formed when acidic water dissolved the surface of the moon.

Answer 28

[AI-generated answer — Bot GPT 3.5]

The correct answer is: Craters resulted when meteoroids crashed into the surface of the moon.

Answer 29

A student creates a Venn diagram depicting two objects in the solar system. On one side of the Venn diagram, the student writes “have surface features such as mountains, valleys, and volcanoes,” and on the other side of the Venn diagram, the student writes “unable to land on because there is no solid surface.”

Which two objects is the student comparing?

(1 point)
Responses

Earth and Venus

Inner and Outer Planets

Sun and Planets

Moon and Earth

Answer 30

[AI-generated answer — Bot GPT 3.5]

The student is comparing Earth and Venus

Answer 31

Which of the following best describes the make up of Saturn's rings? (1 point)

Responses

solid bands of sand and dust that formed from the start of the universe

debris and rocks from other planets that orbit around Saturn

dust, rock, and ice particles that orbit due to Saturn's gravity

material from comets that have passed through Saturn's atmosphere

Answer 32

[AI-generated answer — Bot GPT 3.5]

The correct answer is: dust, rock, and ice particles that orbit due to Saturn's gravity.

Answer 33

Which of the following explains why history is divided into eras? (1 point)

Responses

to help understand each event that occurred in that time period to give an in-depth picture

to help historians organize history and highlight common characteristics and turning points

The people who lived the history divided it up into eras for future historians to study.

to group events and dates in periods that cannot overlap with other periods of time

Answer 34

[AI-generated answer — Bot GPT 3.5]

The correct answer is: to help historians organize history and highlight common characteristics and turning points.

Answer 35

Identify two possible names for the era of Texas history that lasted from 1865 to 1900. (1 point)

Responses

the era of the Texas Republic or Early Statehood

the era of Reconstruction or the Age of Oil

the era of Cotton, Cattle, and Railroads or the Jim Crow era

the Civil Rights era or the era of Texas Conservatism

Answer 36

[AI-generated answer — Bot GPT 3.5]

Two possible names for the era of Texas history that lasted from 1865 to 1900 are:

1. The era of Reconstruction or the Age of Oil
2. The era of Cotton, Cattle, and Railroads or the Jim Crow era

Answer 37

Identify the era when crop farming and permanent settlements were first introduced to Texas. (1 point)

Responses

the Spanish Colonial era

the era of Indigenous Texas

the Age of Contact era

the era of Cotton, Cattle, and Railroads

Answer 38

[AI-generated answer — Bot GPT 3.5]

The era when crop farming and permanent settlements were first introduced to Texas is the Spanish Colonial era.

Answer 39

What colony was Texas part of before 1821?(1 point)

Responses

New England

New Spain

New Mexico

New Amsterdam

Answer 40

[AI-generated answer — Bot GPT 3.5]

Texas was part of New Spain before 1821.

Answer 41

When was Texas its own country?(1 point)

Responses

1718 to 1821

1836 to 1845

1821 to 1836

1845 to 1860

Answer 42

[AI-generated answer — Bot GPT 3.5]

Texas was its own country from 1836 to 1845.

Answer 43

Which description defines a sequence of events?(1 point)

Responses

the order in which things happen

the person writing down what happens

the place and time in which things happen

the people making things happen

Answer 44

[AI-generated answer — Bot GPT 3.5]

The description that defines a sequence of events is: the order in which things happen.